I have two linked models (simplified) :
Ad :
class Ad < ActiveRecord::Base
has_many :propositions
validates :pricemin
validates :pricemax
...
Proposition :
class Proposition < ActiveRecord::Base
belongs_to :ad
attr_accessible :price_proposition
...
I'm trying to add a restriction for the price_proposition (in "proposition" model) to be between "pricemin" and "pricemax".
How could I do that ?
Thanks for your help
Client side validation via Javascript is definitely one way to go. But if you want to do server side validation, you can do something like this:
class Proposition < ActiveRecord::Base
belongs_to :ad
attr_accessible :price_proposition
validate :price_proposition_in_range
def price_proposition_in_range
pricemin = self.ad.pricemin
pricemax = self.ad.pricemax
if self.price_proposition < pricemin || self.price_proposition > pricemax
errors.add(:price_proposition, "Must be between #{pricemin} and #{pricemax}")
end
end
.
.
.
end
And of course, you can add further checks in the method, depending on whether you want to allow blank or not etc etc.
